agp_ali.c revision 194017
161452Sdfr/*- 261452Sdfr * Copyright (c) 2000 Doug Rabson 361452Sdfr * All rights reserved. 461452Sdfr * 561452Sdfr * Redistribution and use in source and binary forms, with or without 661452Sdfr * modification, are permitted provided that the following conditions 761452Sdfr * are met: 861452Sdfr * 1. Redistributions of source code must retain the above copyright 961452Sdfr * notice, this list of conditions and the following disclaimer. 1061452Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1161452Sdfr * notice, this list of conditions and the following disclaimer in the 1261452Sdfr * documentation and/or other materials provided with the distribution. 1361452Sdfr * 1461452Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1561452Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1661452Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1761452Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1861452Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1961452Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2061452Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2161452Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2261452Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2361452Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2461452Sdfr * SUCH DAMAGE. 2561452Sdfr */ 2661452Sdfr 27116192Sobrien#include <sys/cdefs.h> 28116192Sobrien__FBSDID("$FreeBSD: head/sys/dev/agp/agp_ali.c 194017 2009-06-11 17:06:07Z avg $"); 29116192Sobrien 3061452Sdfr#include "opt_bus.h" 3161452Sdfr 3261452Sdfr#include <sys/param.h> 3361452Sdfr#include <sys/systm.h> 3461452Sdfr#include <sys/malloc.h> 3561452Sdfr#include <sys/kernel.h> 36129878Sphk#include <sys/module.h> 3761452Sdfr#include <sys/bus.h> 3861452Sdfr#include <sys/lock.h> 3976827Salfred#include <sys/mutex.h> 4079339Sjhb#include <sys/proc.h> 4161452Sdfr 42173573Sjhb#include <dev/agp/agppriv.h> 43173573Sjhb#include <dev/agp/agpreg.h> 44119288Simp#include <dev/pci/pcivar.h> 45119288Simp#include <dev/pci/pcireg.h> 4661452Sdfr 4761452Sdfr#include <vm/vm.h> 4861452Sdfr#include <vm/vm_object.h> 4961452Sdfr#include <vm/pmap.h> 5061452Sdfr 5161452Sdfrstruct agp_ali_softc { 5261452Sdfr struct agp_softc agp; 5361452Sdfr u_int32_t initial_aperture; /* aperture size at startup */ 5461452Sdfr struct agp_gatt *gatt; 5561452Sdfr}; 5661452Sdfr 5761452Sdfrstatic const char* 5861452Sdfragp_ali_match(device_t dev) 5961452Sdfr{ 6061452Sdfr if (pci_get_class(dev) != PCIC_BRIDGE 6161452Sdfr || pci_get_subclass(dev) != PCIS_BRIDGE_HOST) 6261452Sdfr return NULL; 6361452Sdfr 6461452Sdfr if (agp_find_caps(dev) == 0) 6561452Sdfr return NULL; 6661452Sdfr 6761452Sdfr switch (pci_get_devid(dev)) { 68142646Scognet case 0x167110b9: 69142646Scognet return ("Ali M1671 host to AGP bridge"); 7061452Sdfr case 0x154110b9: 7161452Sdfr return ("Ali M1541 host to AGP bridge"); 72139431Sanholt case 0x162110b9: 73139431Sanholt return ("Ali M1621 host to AGP bridge"); 7461452Sdfr }; 7561452Sdfr 7661452Sdfr return NULL; 7761452Sdfr} 7861452Sdfr 7961452Sdfrstatic int 8061452Sdfragp_ali_probe(device_t dev) 8161452Sdfr{ 8261452Sdfr const char *desc; 8361452Sdfr 84127815Snjl if (resource_disabled("agp", device_get_unit(dev))) 85127815Snjl return (ENXIO); 8661452Sdfr desc = agp_ali_match(dev); 8761452Sdfr if (desc) { 8861452Sdfr device_set_desc(dev, desc); 89142398Simp return BUS_PROBE_DEFAULT; 9061452Sdfr } 9161452Sdfr 9261452Sdfr return ENXIO; 9361452Sdfr} 9461452Sdfr 9561452Sdfrstatic int 9661452Sdfragp_ali_attach(device_t dev) 9761452Sdfr{ 9861452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 9961452Sdfr struct agp_gatt *gatt; 10061452Sdfr int error; 101134098Sanholt u_int32_t attbase; 10261452Sdfr 10361452Sdfr error = agp_generic_attach(dev); 10461452Sdfr if (error) 10561452Sdfr return error; 10661452Sdfr 10761452Sdfr sc->initial_aperture = AGP_GET_APERTURE(dev); 108122513Sanholt if (sc->initial_aperture == 0) { 109122513Sanholt device_printf(dev, "bad initial aperture size, disabling\n"); 110122513Sanholt return ENXIO; 111122513Sanholt } 11261452Sdfr 11361452Sdfr for (;;) { 11461452Sdfr gatt = agp_alloc_gatt(dev); 11561452Sdfr if (gatt) 11661452Sdfr break; 11761452Sdfr 11861452Sdfr /* 11961452Sdfr * Probably contigmalloc failure. Try reducing the 12061452Sdfr * aperture so that the gatt size reduces. 12161452Sdfr */ 12261452Sdfr if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) { 12361452Sdfr agp_generic_detach(dev); 12461452Sdfr return ENOMEM; 12561452Sdfr } 12661452Sdfr } 12761452Sdfr sc->gatt = gatt; 12861452Sdfr 12961452Sdfr /* Install the gatt. */ 130134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 131134098Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, gatt->ag_physical | 132134099Sanholt (attbase & 0xfff), 4); 13361452Sdfr 13461452Sdfr /* Enable the TLB. */ 13561452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1); 13661452Sdfr 13761452Sdfr return 0; 13861452Sdfr} 13961452Sdfr 14061452Sdfrstatic int 14161452Sdfragp_ali_detach(device_t dev) 14261452Sdfr{ 14361452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 144134098Sanholt u_int32_t attbase; 14561452Sdfr 146173203Sjhb agp_free_cdev(dev); 14761452Sdfr 14861452Sdfr /* Disable the TLB.. */ 14961452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1); 15061452Sdfr 15161452Sdfr /* Put the aperture back the way it started. */ 15261452Sdfr AGP_SET_APERTURE(dev, sc->initial_aperture); 153134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 154134099Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, attbase & 0xfff, 4); 15561452Sdfr 15661452Sdfr agp_free_gatt(sc->gatt); 157173203Sjhb agp_free_res(dev); 15861452Sdfr return 0; 15961452Sdfr} 16061452Sdfr 16161452Sdfr#define M 1024*1024 16261452Sdfr 16361452Sdfrstatic u_int32_t agp_ali_table[] = { 16461452Sdfr 0, /* 0 - invalid */ 16561452Sdfr 1, /* 1 - invalid */ 16661452Sdfr 2, /* 2 - invalid */ 16761452Sdfr 4*M, /* 3 - invalid */ 16861452Sdfr 8*M, /* 4 - invalid */ 16961452Sdfr 0, /* 5 - invalid */ 17061452Sdfr 16*M, /* 6 - invalid */ 17161452Sdfr 32*M, /* 7 - invalid */ 17261452Sdfr 64*M, /* 8 - invalid */ 17361452Sdfr 128*M, /* 9 - invalid */ 17461452Sdfr 256*M, /* 10 - invalid */ 17561452Sdfr}; 17661452Sdfr#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0])) 17761452Sdfr 17861452Sdfrstatic u_int32_t 17961452Sdfragp_ali_get_aperture(device_t dev) 18061452Sdfr{ 18161452Sdfr /* 18261452Sdfr * The aperture size is derived from the low bits of attbase. 18361452Sdfr * I'm not sure this is correct.. 18461452Sdfr */ 185134099Sanholt int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xf; 18661452Sdfr if (i >= agp_ali_table_size) 18761452Sdfr return 0; 18861452Sdfr return agp_ali_table[i]; 18961452Sdfr} 19061452Sdfr 19161452Sdfrstatic int 19261452Sdfragp_ali_set_aperture(device_t dev, u_int32_t aperture) 19361452Sdfr{ 19461452Sdfr int i; 195134098Sanholt u_int32_t attbase; 19661452Sdfr 19761452Sdfr for (i = 0; i < agp_ali_table_size; i++) 19861452Sdfr if (agp_ali_table[i] == aperture) 19961452Sdfr break; 20061452Sdfr if (i == agp_ali_table_size) 20161452Sdfr return EINVAL; 20261452Sdfr 203134098Sanholt attbase = pci_read_config(dev, AGP_ALI_ATTBASE, 4); 204134099Sanholt pci_write_config(dev, AGP_ALI_ATTBASE, (attbase & ~0xf) | i, 4); 20561452Sdfr return 0; 20661452Sdfr} 20761452Sdfr 20861452Sdfrstatic int 209194017Savgagp_ali_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical) 21061452Sdfr{ 21161452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 21261452Sdfr 213194017Savg if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 21461452Sdfr return EINVAL; 21561452Sdfr 21661452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical; 21761452Sdfr return 0; 21861452Sdfr} 21961452Sdfr 22061452Sdfrstatic int 221194017Savgagp_ali_unbind_page(device_t dev, vm_offset_t offset) 22261452Sdfr{ 22361452Sdfr struct agp_ali_softc *sc = device_get_softc(dev); 22461452Sdfr 225194017Savg if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) 22661452Sdfr return EINVAL; 22761452Sdfr 22861452Sdfr sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0; 22961452Sdfr return 0; 23061452Sdfr} 23161452Sdfr 23261452Sdfrstatic void 23361452Sdfragp_ali_flush_tlb(device_t dev) 23461452Sdfr{ 23561452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x90, 1); 23661452Sdfr pci_write_config(dev, AGP_ALI_TLBCTRL, 0x10, 1); 23761452Sdfr} 23861452Sdfr 23961452Sdfrstatic device_method_t agp_ali_methods[] = { 24061452Sdfr /* Device interface */ 24161452Sdfr DEVMETHOD(device_probe, agp_ali_probe), 24261452Sdfr DEVMETHOD(device_attach, agp_ali_attach), 24361452Sdfr DEVMETHOD(device_detach, agp_ali_detach), 24461452Sdfr DEVMETHOD(device_shutdown, bus_generic_shutdown), 24561452Sdfr DEVMETHOD(device_suspend, bus_generic_suspend), 24661452Sdfr DEVMETHOD(device_resume, bus_generic_resume), 24761452Sdfr 24861452Sdfr /* AGP interface */ 24961452Sdfr DEVMETHOD(agp_get_aperture, agp_ali_get_aperture), 25061452Sdfr DEVMETHOD(agp_set_aperture, agp_ali_set_aperture), 25161452Sdfr DEVMETHOD(agp_bind_page, agp_ali_bind_page), 25261452Sdfr DEVMETHOD(agp_unbind_page, agp_ali_unbind_page), 25361452Sdfr DEVMETHOD(agp_flush_tlb, agp_ali_flush_tlb), 25461452Sdfr DEVMETHOD(agp_enable, agp_generic_enable), 25561452Sdfr DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory), 25661452Sdfr DEVMETHOD(agp_free_memory, agp_generic_free_memory), 25761452Sdfr DEVMETHOD(agp_bind_memory, agp_generic_bind_memory), 25861452Sdfr DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory), 25961452Sdfr 26061452Sdfr { 0, 0 } 26161452Sdfr}; 26261452Sdfr 26361452Sdfrstatic driver_t agp_ali_driver = { 26461452Sdfr "agp", 26561452Sdfr agp_ali_methods, 26661452Sdfr sizeof(struct agp_ali_softc), 26761452Sdfr}; 26861452Sdfr 26961452Sdfrstatic devclass_t agp_devclass; 27061452Sdfr 271153572SjhbDRIVER_MODULE(agp_ali, hostb, agp_ali_driver, agp_devclass, 0, 0); 272113506SmdoddMODULE_DEPEND(agp_ali, agp, 1, 1, 1); 273113506SmdoddMODULE_DEPEND(agp_ali, pci, 1, 1, 1); 274